Source/WebCore/fileapi/FileWriterBase.cpp

/*
 * Copyright (C) 2010 Google Inc.  All rights reserved.
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 * modification, are permitted provided that the following conditions are
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 * in the documentation and/or other materials provided with the
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 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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#include "config.h"

#if ENABLE(FILE_SYSTEM)

#include "FileWriterBase.h"

#include "AsyncFileWriter.h"
#include "Blob.h"
#include "ExceptionCode.h"
#include "FileError.h"
#include "FileException.h"
#include "ProgressEvent.h"

namespace WebCore {

FileWriterBase::~FileWriterBase()
{
}

void FileWriterBase::initialize(PassOwnPtr<AsyncFileWriter> writer, long long length)
{
    ASSERT(!m_writer);
    ASSERT(length >= 0);
    m_writer = writer;
    m_length = length;
}

FileWriterBase::FileWriterBase()
    : m_position(0)
{
}

void FileWriterBase::seekInternal(long long position)
{
    if (position > m_length)
        position = m_length;
    else if (position < 0)
        position = m_length + position;
    if (position < 0)
        position = 0;
    m_position = position;
}

} // namespace WebCore

#endif // ENABLE(FILE_SYSTEM)